if u use hanging pots,put a water tray around 2 times the size of the pot below the hanging pot and fill it with water and some pebbles.
the pebbles should be porous i.e. scoria, so that they absorb the water and create humidity.
__________________________________________________ _______
|__________|
\ pot / <<<<<<<<<hanging pot
\_______/
~~~~oo~~~~~~oo~~
|_______________| <<<<water tray
Legends :
________________________ |
|~~~~oo~~~~~oo~~ |
|= water mix with pebbles|
|_______________________|
hope i helped 
Harris